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Finding the Fourth Proportional to 177.19, 244.42 and 121.91

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Solution

The fourth proportional to 177.19, 244.42 and 121.91 is: 168.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.19 : 244.42 = 121.91 : x
  2. Step 2: Convert to fraction form
    177.19/244.42 = 121.91/x
  3. Step 3: Cross multiply
    177.19x = 244.42 × 121.91
  4. Step 4: Simplify right side
    177.19x = 29,795.72
  5. Step 5: Solve for x
    x = 29,795.72/177.19
  6. Step 6: Final answer
    x = 168.16

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.